The Inside Out House is a 637 square-foot two story home located in Katsushika, one of the special wards of Tokyo, Japan.

Designed by Takeshi Hosaka Architects for a couple and two cats, “the project started based on the idea that humans and cats live in a same house, rather than cats living in a house designed for humans — and finally this idea brought out a concept: “a house inside which you feel being outside.”